"(The) SUSE Linux Enterprise High Availability Extension offers a flexible, policy-driven clustering solution so customers don't have to worry about service outages," he said. Also offered are, "resource agents to monitor third-party applications like SAP HANA and continuous data replication".

While SAP does run on other databases, Almahmoud said SAP HANA afforded some additional features.

"SAP HANA is unique in its ability to converge database and application logic within the in-memory engine to transform transactions, analytics, text analysis, predictive and spatial processing," he added.

Almahmoud said a typical set-up would include two systems for replication with node 1 acting as an active primary where users were connected and node 2 acting as an active secondary.

"Node 2 is maintained in full sync (data, memory, ...) with node 1, to take over when a component fails on node 1. SAP HANA System Replication does the replication and SUSE High Availability cluster monitors the components' status (software & hardware) on node 1," he said.

"In case of failure on node 1, SUSE solution will automate the failover to node 2 (declare node 2 as primary, and direct users from node 1 to node 2."

Subscriptions to SUSE Linux Enterprise Server include the high-availability capability for no extra charge.

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A professional journalist with decades of experience, Sam for nine years used DOS and then Windows, which led him to start experimenting with GNU/Linux in 1998. Since then he has written widely about the use of both free and open source software, and the people behind the code. His personal blog is titled Irregular Expression.